7'7" x 7'7" octagonal summerhouse 510
Dimension A = 1274mm
Dimension D = 1274mm
Dimension E = 1274mm
Dimension H = 1274mm
Overall width = 2270mm (498mm + 1274mm + 498mm)
Overall depth = 2270mm (498mm + 1274mm + 498mm)
We recommend that your base should be no smaller than the floor size of the new summerhouse and no more than a few inches larger.